9.4.2 - Term Frequency – Inverse Document Frequency (TF-IDF)
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Practice Questions
Test your understanding with targeted questions
What does TF stand for?
💡 Hint: It's the first part of TF-IDF.
What does IDF measure?
💡 Hint: Think of the word 'Inverse' in IDF.
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Interactive Quizzes
Quick quizzes to reinforce your learning
What does TF-IDF measure?
💡 Hint: Think about why we analyze text.
True or False: High IDF suggests a term is common across documents.
💡 Hint: Focus on the meaning of 'Inverse'.
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Challenge Problems
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You have 5 documents and the term 'machine' appears in 3. Calculate its IDF and TF given it appears 4 times in a document of 200 words.
💡 Hint: Calculate IDF, then TF, and multiply them.
If a term appears in every document of a dataset and its TF is high, what does that imply about its IDF?
💡 Hint: Consider why commonality affects uniqueness.
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